Few questions on this new arrow functions: let foo = x => x * x
1. What is foo.prototype ? 2. What does new foo(y) does ? 3. Is there going to be equivalent of Function for arrow functions ? 4. Is Function.create(foo) going to work ? 5. Will foo.call, foo.apply pass in the `this` ? Regards -- Irakli Gozalishvili Web: http://www.jeditoolkit.com/ On Thursday, 2012-03-29 at 07:15 , Brendan Eich wrote: > This is all moot now -- see meeting notes and followups. Thin arrow is > not going to make it, we want one arrow. The |this| parameter for opting > into dynamic rather than default-lexical |this| also died. Method > definition shorthand covers the only strong use-case, as Kevin's > analysis shows. > > /be > > Herby Vojčík wrote: > > Brendan Eich wrote: > > > Kevin Smith wrote: > > > > > > > > I hate the CoffeeScript deviation, though. It's just confusing for > > > > anyone who ever learned that fat-arrow binds |this| and thin-arrow > > > > doesn't. > > > > > > > > > > > > True. On the other hand, "all arrows bind |this|" is also quite simple > > > > and easy to remember. > > > > > > > > > > > > > Yes, and I kept the part of the proposal that allows |this| as a leading > > > arrow formal parameter, including with parameter default value. This > > > suggests a slight variation on the strawman, per your suggestion: > > > > > > x -> { return this.x; } // lexical this for thin arrow > > > x => this.x // as for fat arrow > > > > > > (this, x) -> { return this.x; } // dynamic this, five letter syn-tax > > > (this, x) => this.x // ditto for the expression-body form > > > > > > > > > I like this very much. Clear, orthogonal, readable. > > It would be nice if this could get through. > > > > > /be > > > > Herby > > > > P.S.: Dynamic this no-arg function could also use one-arg shorthand? > > > > this => this.x > > this -> { return this.x; } > > > > _______________________________________________ > es-discuss mailing list > [email protected] (mailto:[email protected]) > https://mail.mozilla.org/listinfo/es-discuss > >
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